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Finding the Fourth Proportional to 889,159, 1,333,741.92 and 215,239.20

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Solution

The fourth proportional to 889,159, 1,333,741.92 and 215,239.20 is: 322,859.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,159 : 1,333,741.92 = 215,239.20 : x
  2. Step 2: Convert to fraction form
    889,159/1,333,741.92 = 215,239.20/x
  3. Step 3: Cross multiply
    889,159x = 1,333,741.92 × 215,239.20
  4. Step 4: Simplify right side
    889,159x = 287,073,543,867.26
  5. Step 5: Solve for x
    x = 287,073,543,867.26/889,159
  6. Step 6: Final answer
    x = 322,859.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.